What do the ratings A, B and C mean?

A means no or little action: the material should be acceptable for use in the pump. B means moderate action: use the material only if there is no alternative or if a short service life is acceptable. C means strong action: do not use the material. A dash means that no data is available.

Where do I find the serial number of my Verderflex pump?

On the name plate of the pump. It shows the pump type, the serial number and the year of manufacture. Quote the model and serial number whenever you request spare parts or service.

What is the recommended free residual chlorine level in drinking water?

Generally 0.5 to 1.0 mg/l (ppm) of free residual chlorine. For swimming pools and spas, 1.5 to 3.0 mg/l. These are general values: each competent authority sets its own.

What temperature can Verderprene tubing handle?

Verderprene has an operating temperature of +10 °C to +85 °C (+50 °F to +185 °F). For safety reasons we do not recommend pumping liquids above 85 °C. For lower temperatures, silicone tubing is rated from -20 °C.

What is the difference between the operation manual and the repair/parts manual?

The operation manual covers installation, operation, maintenance and technical data. The repair/parts manual covers troubleshooting, repair, parts and kits. For VA08, VA10, VA15, VA20 and the VA40 and VA50 metallic and non-metallic pumps, both are in one document.

My liquid is not in the table, or shows a dash. What now?

Run an immersion test. For tubing, immerse half of a tube sample in the liquid for 48 hours and compare it with the other half. For hoses, measure the change in hardness and volume of rubber samples. If you are still in doubt, ask our pump experts.

Is the Microdos manual available in my language?

Yes. Each Microdos manual is one PDF with English, French, Italian and Spanish. The menus of the ME3-PH/RX, ME3-CL and V-MS can also be set to these four languages.

Where do I find the serial number of my Packo pump?

On the nameplate, together with the pump type, the year and week of production and the weight. Quote type and serial number with every spare parts or service request.

What is the maximum discharge pressure of a Verderflex Dura pump?

Dura 5 and 7 reach 8 bar, Dura 10, 15 and 25 reach 12 bar, and Dura 35 to 100 reach 16 bar. On Dura 5 to 35 these values need the high-pressure rotor; the standard rotor is rated 5 bar on Dura 5 and 7 and 6 bar on Dura 10 to 35. The datasheets for Dura 10 to 45 ask you to consult Verder before running above 6 bar (Dura 5: above 5 bar). On Dura 45 to 100, shims set the hose compression for the discharge pressure; the operating manual lists the number of shims per hose material.

What is a chemical dosing plant?

A complete installation that stores a chemical and doses it into a process at a controlled rate. It typically includes storage tanks, a dosing rig with duty/standby pumps, pipework, controls and a kiosk with a bund area and emergency shower. Verder assembles and tests package plants before shipping.

When should I replace the hose of my Dura pump?

When the flow has dropped by 25% of the nominal value, when the hose is burst or damaged, or when an inspection shows wear. Replace the flange sealing kit and the lubricant at the same time. Our video tutorials show how to change a hose.

What is the difference between free, combined and total chlorine?

Free chlorine is the sum of Cl₂, hypochlorous acid (HClO) and hypochlorite ion (ClO⁻). Combined chlorine consists mainly of chloramines, formed when chlorine reacts with ammonia; they disinfect about 25 times less effectively than free chlorine. Total chlorine is free plus combined chlorine. With the DPD method you first measure free chlorine, then add potassium iodide to measure total chlorine. The difference is the combined chlorine.

Is Verderprene food grade?

Verderprene is designed for non-fatty food contact applications and meets FDA and NSF 51 criteria. It is also RoHS compliant.

Does my Verderair pump need lubrication?

The HE pumps are lubricated at the factory and need no further lubrication. The other VA pumps are designed to run without added lubrication. If you still lubricate them, use two drops of machine oil in the air inlet every 500 operating hours or every month.

How long does a compatibility test on hose material take?

Three months at ambient temperature. With a heating system you can shorten it to 3 days at 70 °C, which as a general rule has the same chemical effect as 3 months at ambient temperature.

How often should I clean my Microdos dosing pump?

Clean the pump head, foot filter and injection valve at least every 3 months, and more often if the chemical forms crystals. Check the chemical level regularly so the pump never runs dry.

How do I order genuine Packo spare parts?

Send us the pump type and serial number, and for rotary lobe pumps the position number from the exploded view in the manual. Only original Packo parts keep the certificates of the pump (Machinery Directive, ATEX, EC 1935/2004) valid. Request spare parts.

What is the maximum pressure of the Verderflex VF 125?

16 bar according to the VF 100–125 manual; the performance curve in the technosheet goes up to 15 bar. The number of shims sets the pressure. Above 65 °C or 2,000 mPas, use one shim less than the shimming curve shows.

What does the number in the Dura model name mean?

The number matches the internal diameter of the hose in millimetres that the datasheet lists: Dura 10 uses a 10 mm hose and Dura 100 a 100 mm hose. A larger hose moves more liquid per rotor revolution. Dura 60 shares its operating manual and most spare parts with the Dura 55, but has a 60 mm hose and a higher flow of up to 16.5 m³/h.

Why do dosing skids have two pumps?

The two pumps work as duty and standby. If a wearing part on the duty pump needs service, the standby pump takes over and dosing continues without interruption.

How often should I change the lubricant?

At every hose change, or every six months, whichever comes first. Check the level in the inspection window before start-up and daily during operation.

What is the breakpoint in chlorination?

The breakpoint is the point on the chlorination curve after which all added chlorine remains as free chlorine. Before it, chlorine is consumed by reducing substances (Fe²⁺, Mn²⁺, H₂S), then forms chloramines, which are destroyed again when more chlorine is added. The chlorine demand of the water corresponds approximately to the dose at which the breakpoint is reached.

Can Verderprene be autoclaved or cleaned in place?

Yes. Verderprene can be autoclaved and is compatible with most CIP and SIP solutions. Check your cleaning agents in the chemical compatibility guide.

How often should I retorque the fasteners?

Before first use, after the first day of operation and then, as a general guideline, every two months.

Which hose material should I use for oily or fatty products?

NBR (nitrile buna rubber), which is also suitable for organic materials. For food and hygienic applications, choose NBRF, the food grade version with an FDA and EC 1935/2004 approved liner. Always check your product in the table, because NBR and NBRF ratings are not identical for every chemical.

How do I remove air from a Microdos solenoid pump?

Open the purge knob half a turn, run the pump at 50% of the maximum flow and close the knob as soon as only chemical comes out.

Is there one manual for all Packo centrifugal pumps?

Yes. The centrifugal pump manual covers the CRP, FMS, FP, ICP, IFF, MFF, VH, IRP, KNM, MCP, MFP, MSP, MWP, NMS, NP, PHP, PRP, IPP, FPP, SFP, VPC, VDK, MSCP, VMS1, VMM2, VMHP, CM, PM and GFP series. It is available in ten languages.

What does the number in the model name mean?

The inner diameter of the hose in millimetres: the VF 125 has a 125 mm hose and 125 mm port flanges.

Which hose materials are available for the Dura?

Natural rubber (NR, white) is standard and suits highly abrasive slurries, lightly corrosive chemicals and inorganic products. NBR (yellow) is for oily or fatty products. NBRF (yellow and white) has an FDA-approved food grade inner liner for hygienic applications. CSM or Hypalon® (green) handles highly corrosive products such as strong oxidising agents, and EPDM (red) handles corrosive chemicals. Verderprene is available for Dura 5 and Dura 10 to 35. Availability per size is in the construction table above; check your liquid in the chemical compatibility guide.

Which pump is best for dosing sodium hypochlorite?

Hypochlorite gasses off, which can vapour lock diaphragm pumps. Peristaltic pumps handle gas and liquid, so they are a common choice. Diaphragm dosing pumps need venting at the system’s highest point and bleed valves. Choose a non-metallic build. See pumping sodium hypochlorite.

How much lubricant does a Dura hose pump need?

From 0.25 litre for a Dura 5, 7 or 10 up to 25 litres for a Dura 65. Fill the housing to the lowest screw hole of the inspection window. The table on this page lists the volume per model.

How much chlorine do I need per m³ of water?

1 mg/l corresponds to 1 gram of active chlorine per m³ (1,000 litres) of water. The dose you add is the chlorine demand of the water plus the free residual chlorine you want to maintain. The hypochlorite flow is calculated as Q(Cl) [l/h] = Q(water) [m³/h] × (D + C) / (10 × %). Example: 50 m³/h of water with a chlorine demand of 10 mg/l, a required residual of 1 mg/l and 5% hypochlorite gives 50 × 11 / 50 = 11 l/h.

Can I pump hydrogen peroxide with Verderprene tubing?

The Chemical Compatibility Guide rates Verderprene C (do not use) for hydrogen peroxide at 10%, 30% and 88%, while silicone and Viton® are rated A at 10%. Ask our pump experts before you select a tube for peroxide.

Why is there fluid in the exhaust air?

Usually a ruptured diaphragm. A loose diaphragm shaft bolt or plate can also cause it. Stop the pump, relieve the pressure and repair it.

Which hose material should I use for corrosive chemicals?

EPDM is suitable for corrosive chemicals and inorganic products, and is made of EPDM throughout. CSM (Hypalon®) is used for highly corrosive products such as strong oxidising agents. Check the rating of your liquid, its concentration and its temperature in the table before you decide.

What does “Imposs. Calibr.” or “rEP CAL” mean?

The calibration has not been saved. Repeat it. If the message returns, check that the buffer solution is not contaminated and matches the value on the display. If it still fails, the probe may need replacing.

How do I check the direction of rotation of a centrifugal pump?

The arrow on the nameplate shows the correct direction. With a frequency converter, run the pump briefly at 5 Hz. On a direct mains connection, switch the motor off within 1 second and watch the fan, without removing the fan cover. If the direction is wrong, switch off the power and swap two phases.

Which hose materials are available for the VF 125?

Natural rubber (NR) as standard; NBR, NBRF (food grade), EPDM and CSM (Hypalon®) as options. Check your liquid in the chemical compatibility guide.

How much lubricant does a Dura pump need, and which type?

Dura 5, 7 and 10 need 0.25 litres, Dura 15 0.5 litres, Dura 25 2.0 litres and Dura 35 2.5 litres. Dura 45 takes 7 litres, Dura 55 and 60 take 15 litres, Dura 65 takes 25 litres (35 litres with the level sensor kit), Dura 80 approx. 42 litres and Dura 100 approx. 65 litres. Use Verderlube (glycerine based) up to 50 °C and Verdersil (silicone based) above 50 °C, after checking compatibility with your liquid. ATEX pumps may only use Verderlube. Replace the lubricant at every hose change or every six months. See Verderflex lubricants.

Which pump is best for dosing lime slurry?

Lime slurry is abrasive and settles quickly. A peristaltic pump keeps the slurry inside the hose, away from moving parts, and its flow follows the pump speed. Keep the pump and discharge point close to the tank so lime does not settle in the line.

How do EODD pumps compare to AODD on energy consumption?

A compressed air system converts only 10–15% of its input electrical energy into useful work at the pump. An EODD pump eliminates the compressor entirely and can deliver up to 80% lower energy consumption than an equivalent AODD pump on the same duty. For continuous high-run-time transfer applications, the EODD typically delivers payback within 12 to 24 months.

Why is my hose pump running hot?

The most common causes are a low lubricant level, the wrong lubricant, a pump speed that is too high, a blocked suction line or a product temperature above the limit. Check these first. If the pump still runs hot, contact our service team.

How long must chlorine be in contact with the water?

That depends on the Ct value: free chlorine concentration × contact time, which depends on the micro-organism, temperature and pH. For 99% inactivation of Giardia cysts at 20 °C and pH 7.5 with 1 mg/l of chlorine, Ct is 45 mg·min/l, so the contact time is 45 minutes. As a general rule, at a pH below 8 a contact time of 30 minutes is sufficient.

Should I choose Verderprene or silicone?

Verderprene is the general purpose tube with the best mechanical life and low gas permeability. Silicone is translucent, platinum cured and rated from -20 °C to +80 °C, with USP Class VI approval. Both have good suction lift.

Can I use a polypropylene or PVDF pump with flammable fluids?

Standard polypropylene and PVDF pumps are not conductive. Never use them with non-conductive flammable fluids. Check the ATEX section of your manual and ground the entire fluid system.

Which tube material is best for fuels and oils?

Tygon® is designed for most fuels and industrial lubricants, and Viton® for oils, fuels, solvents and most mineral acids. Always check your specific liquid in the table: for diesel oil, for example, Viton is the only tube material rated A.

How should I store pH and Redox probes?

In their original bottle with maintenance liquid. Electrodes that are left dry age prematurely.

Can a Packo pump run dry or against a closed valve?

No. A centrifugal pump must never run without liquid or with a closed suction valve, and needs a minimum flow of 1 m³/h per kW absorbed motor power (FMS and NMS: 0.5 m³/h). A rotary lobe pump must never run against a closed valve. Its front cover relief valve protects only the pump and must not stay open longer than 3 seconds.

Which lubricant does the VF 125 need, and how much?

80 litres of Verderlube or Verdersil, filled to the middle screw hole of the front cover. Verderlube is glycerine based, up to 50 °C; Verdersil is a silicone oil for use above 50 °C. Replace the lubricant at every hose change or every six months.

When should I replace the hose of a Dura pump?

Replace the hose when the flow has dropped by 25% of the nominal value, or when the hose is burst or damaged. Replace the flange sealing kit at the same time. Inspect the pump housing, rotor and inserts from the inside every year and at every hose change, because worn surfaces shorten hose life. Replace the bearing and seal after 30,000 running hours, or earlier when you notice damage or a leak.

What happens if a hose bursts in a peristaltic dosing pump?

The chemical is contained in the pump casing, where it mixes with the lubricant, so choose a compatible lubricant (for example a silicone type for sulphuric acid). A leak detection sensor can trigger an alarm. Respond promptly: a pump left running with a burst hose can be damaged.

Verderdos for Pool and Spa

VE Dual pH-CL Panel

Komplettlösungen

VE DUAL Panele sind eine kompakte und effiziente Komplettlösung für die Überwachung und Regulierung des pH- und Redox-/Chlor-Wertes im Poolwasser. Die Panele beinhalten einen Controller mit integrierten Pumpen,Sonden, Messzellenaufnehmer und weiteres Equipment.

Redox-Manager - VE1-RX

✔Für die automatische Cl-Regulierung
✔Einfache Bedienung über LCD-Display
✔Schutzklasse IP55
✔Im Lieferumfang enthalten: Schuko-Stecker, Ein/Aus-Schalter, Impfventil
✔Fussventil, Ansaugschlauch, Förderschlauch
✔Optional: Dosierung über externes Eingangssignal
✔Optional: Installationsset (Siehe Seite 10)

pH/Redox-Manager - VE3 PH/RX

✔Für die automatische Chlor- oder pH-Wert-Regulierung
✔Einfache Bedienung über LCD-Display
✔Schutzklasse IP55
✔Im Lieferumfang enthalten: Schuko-Stecker, Ein/Aus-Schalter, Impfventil,
✔Fussventil, Ansaugschlauch, Förderschlauch
✔Optional: Niveaumeldung (zweistufig), Durchflusswächter,
✔Installationsset (Siehe Seite 10)

pH-Redox Dosieranlage - VE Dual PH-RX

✔Automatische Wasseraufbereitung inkl. pH-Wert-Regulierung und
✔Redox-Messung
✔Einfache Bedienung über LCD-Display
✔Möglichkeit der Temperaturkompensation
✔Kompaktes und Stabiles Gehäuse
✔Schutzklasse IP55
✔Im Lieferumfang enthalten: Schuko-Stecker, Ein/Aus-Schalter, Impfventil,
✔Fussventil, Ansaugschlauch, Förderschlauch
✔Optional: Installationsset (Siehe Seite 10)

VE Dual pH-RX Panel

Ihr Nutzen

✔Controller mit integrierten elektromagentischen Dosierpumpen
✔Echtzeit-Anzeige der Wasserwerte
✔LCD-Anzeige mit Hintergrundbeleuchtung
✔Inkl. Sonden, Messzellenaufnehmer, Schuko-Stecker,Impfventil, Filter, etc.
✔Alarm bei Überdosierung
✔Start-Verzögerung
✔Passwortschutz verfügbar
✔Einfache Bedienung
✔Fördermengenanzeige in %
✔3 Betriebsarten: Konstant, AN/AUS, Proportional
✔Potentialfreier Kontakt (Alarm-Releais)
✔Automatische Wasseraufbereitung
✔inkl. pH- und Redox-/Chlor-Wert-Regulierung
✔Schutzklasse IP65
✔Möglichkeit der Temperaturkompensation
✔Inkl. Eingang für Niveauschalter
✔Inkl. Strömungsschalter

Equipment für Großanlagen

Die Verderdos VE Magnetdosierpumpen sind speziell für Dosierapplikationen mit höherem Druck geeignet.

pH-Manager - VE1-PH

✔Für die automatische pH-Wert-Regulierung
✔Einfache Bedienung über LCD-Display
✔Schutzklasse IP55
✔Im Lieferumfang enthalten: Schuko-Stecker, Ein/Aus-Schalter, Impfventil,
✔Fussventil, Ansaugschlauch, Förderschlauch
✔Optional: Dosierung über externes Eingangssignal
✔Optional: Installationsset (Siehe Seite 10)